linux-kernel - Re: [PATCH 24/32] vfs: syscall: Add fsopen() to prepare for superblock creation [ver #9]

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Message-Id: <F80F34FD-CFD3-4A53-AECC-AEC8D9EF3EAE@amacapital.net>
Date:   Fri, 13 Jul 2018 08:01:56 -0700
From:   Andy Lutomirski <luto@...capital.net>
To:     David Howells <dhowells@...hat.com>
Cc:     Linus Torvalds <torvalds@...ux-foundation.org>,
        Andrew Lutomirski <luto@...nel.org>,
        Al Viro <viro@...iv.linux.org.uk>,
        Linux API <linux-api@...r.kernel.org>,
        linux-fsdevel <linux-fsdevel@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Jann Horn <jannh@...gle.com>, Tycho Andersen <tycho@...ho.ws>
Subject: Re: [PATCH 24/32] vfs: syscall: Add fsopen() to prepare for superblock creation [ver #9]



> On Jul 13, 2018, at 6:27 AM, David Howells <dhowells@...hat.com> wrote:
> 
> Whilst I'm at it, do we want the option of doing the equivalent of mountat()?
> I.e. offering the option to open all the device files used by a superblock
> with dfd and AT_* flags in combination with the filename?
> 

Isn’t that more or less what I was suggesting?  I suggested dfd and path and I also suggested just an fd and letting the caller open the file itself.

> David